2 * Copyright © 2011 Canonical Limited
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the licence, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
17 * Author: Ryan Lortie <desrt@desrt.ca>
22 #include "gtkmodelmenuitem.h"
24 #include "gtkaccelmapprivate.h"
25 #include "gtkmodelmenu.h"
27 struct _GtkModelMenuItem
29 GtkCheckMenuItem parent_instance;
31 GActionGroup *actions;
32 const gchar *action_name;
33 gboolean has_indicator;
34 gboolean can_activate;
38 typedef GtkCheckMenuItemClass GtkModelMenuItemClass;
40 static void gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface);
41 G_DEFINE_TYPE_WITH_CODE (GtkModelMenuItem, gtk_model_menu_item, GTK_TYPE_CHECK_MENU_ITEM,
42 G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_OBSERVER, gtk_model_menu_item_observer_iface_init))
45 gtk_model_menu_item_activate (GtkMenuItem *menu_item)
47 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
49 if (item->can_activate)
50 g_action_group_activate_action (item->actions, item->action_name, item->target);
54 gtk_model_menu_item_toggle_size_request (GtkMenuItem *menu_item,
57 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
59 if (item->has_indicator)
60 GTK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
61 ->toggle_size_request (menu_item, requisition);
68 gtk_model_menu_item_draw_indicator (GtkCheckMenuItem *check_item,
71 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (check_item);
73 if (item->has_indicator)
74 GTK_CHECK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
75 ->draw_indicator (check_item, cr);
79 gtk_model_menu_item_set_active (GtkModelMenuItem *item,
82 GtkCheckMenuItem *checkitem = GTK_CHECK_MENU_ITEM (item);
84 if (gtk_check_menu_item_get_active (checkitem) != active)
86 _gtk_check_menu_item_set_active (checkitem, active);
87 g_object_notify (G_OBJECT (checkitem), "active");
88 gtk_check_menu_item_toggled (checkitem);
89 gtk_widget_queue_draw (GTK_WIDGET (item));
94 gtk_model_menu_item_action_added (GActionObserver *observer,
95 GActionObservable *observable,
96 const gchar *action_name,
97 const GVariantType *parameter_type,
101 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
103 /* we can only activate the item if we have the correct type of parameter */
104 item->can_activate = (item->target == NULL && parameter_type == NULL) ||
105 (item->target != NULL && parameter_type != NULL &&
106 g_variant_is_of_type (item->target, parameter_type));
108 if (item->can_activate)
110 if (item->target != NULL && state != NULL)
112 /* actions with states and targets are radios */
115 selected = g_variant_equal (state, item->target);
116 gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), TRUE);
117 gtk_model_menu_item_set_active (item, selected);
118 item->has_indicator = TRUE;
121 else if (state != NULL && g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
123 /* boolean state actions without target are checks */
124 gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), FALSE);
125 gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
126 item->has_indicator = TRUE;
131 /* stateless items are just plain actions */
132 gtk_model_menu_item_set_active (item, FALSE);
133 item->has_indicator = FALSE;
136 gtk_widget_set_sensitive (GTK_WIDGET (item), enabled);
137 gtk_widget_queue_resize (GTK_WIDGET (item));
142 gtk_model_menu_item_action_enabled_changed (GActionObserver *observer,
143 GActionObservable *observable,
144 const gchar *action_name,
147 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
149 if (!item->can_activate)
152 gtk_widget_set_sensitive (GTK_WIDGET (item), item->can_activate && enabled);
156 gtk_model_menu_item_action_state_changed (GActionObserver *observer,
157 GActionObservable *observable,
158 const gchar *action_name,
161 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
163 if (!item->can_activate)
167 gtk_model_menu_item_set_active (item, g_variant_equal (state, item->target));
169 else if (g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
170 gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
174 gtk_model_menu_item_action_removed (GActionObserver *observer,
175 GActionObservable *observable,
176 const gchar *action_name)
178 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
180 if (!item->can_activate)
183 gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
184 gtk_model_menu_item_set_active (item, FALSE);
185 item->has_indicator = FALSE;
187 gtk_widget_queue_resize (GTK_WIDGET (item));
191 gtk_model_menu_item_setup (GtkModelMenuItem *item,
194 GActionObservable *actions,
195 GtkAccelGroup *accels)
197 GMenuAttributeIter *iter;
202 if ((submenu = g_menu_model_get_item_link (model, item_index, "submenu")))
204 gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), gtk_model_menu_create_menu (submenu, actions, accels));
205 g_object_unref (submenu);
208 iter = g_menu_model_iterate_item_attributes (model, item_index);
209 while (g_menu_attribute_iter_get_next (iter, &key, &value))
211 if (g_str_equal (key, "label") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
212 gtk_menu_item_set_label (GTK_MENU_ITEM (item), g_variant_get_string (value, NULL));
214 else if (g_str_equal (key, "action") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
215 item->action_name = g_variant_get_string (value, NULL);
217 else if (g_str_equal (key, "target"))
218 item->target = g_variant_ref (value);
220 g_variant_unref (value);
222 g_object_unref (iter);
224 gtk_menu_item_set_use_underline (GTK_MENU_ITEM (item), TRUE);
226 if (item->action_name)
228 const GVariantType *type;
233 /* observer already causes us to hold a hard ref on the group */
234 item->actions = G_ACTION_GROUP (actions);
238 g_action_observable_register_observer (actions, item->action_name, G_ACTION_OBSERVER (item));
240 if (g_action_group_query_action (G_ACTION_GROUP (actions), item->action_name, &enabled, &type, NULL, NULL, &state))
242 gtk_model_menu_item_action_added (G_ACTION_OBSERVER (item), actions, item->action_name, type, enabled, state);
244 g_variant_unref (state);
247 gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
250 gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
252 path = _gtk_accel_path_for_action (item->action_name, item->target);
253 gtk_menu_item_set_accel_path (GTK_MENU_ITEM (item), path);
259 gtk_model_menu_item_finalize (GObject *object)
261 G_OBJECT_CLASS (gtk_model_menu_item_parent_class)
266 gtk_model_menu_item_init (GtkModelMenuItem *item)
271 gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface)
273 iface->action_added = gtk_model_menu_item_action_added;
274 iface->action_enabled_changed = gtk_model_menu_item_action_enabled_changed;
275 iface->action_state_changed = gtk_model_menu_item_action_state_changed;
276 iface->action_removed = gtk_model_menu_item_action_removed;
280 gtk_model_menu_item_class_init (GtkModelMenuItemClass *class)
282 GtkCheckMenuItemClass *check_class = GTK_CHECK_MENU_ITEM_CLASS (class);
283 GtkMenuItemClass *item_class = GTK_MENU_ITEM_CLASS (class);
284 GObjectClass *object_class = G_OBJECT_CLASS (class);
286 check_class->draw_indicator = gtk_model_menu_item_draw_indicator;
288 item_class->activate = gtk_model_menu_item_activate;
289 item_class->toggle_size_request = gtk_model_menu_item_toggle_size_request;
291 object_class->finalize = gtk_model_menu_item_finalize;
295 gtk_model_menu_item_new (GMenuModel *model,
297 GActionObservable *actions,
298 GtkAccelGroup *accels)
300 GtkModelMenuItem *item;
302 item = g_object_new (GTK_TYPE_MODEL_MENU_ITEM, NULL);
304 gtk_model_menu_item_setup (item, model, item_index, actions, accels);
306 return GTK_MENU_ITEM (item);